Journal-box dust guard



Jan. 13, 1931. c, RlPLEY 1,788,494

JOURNAL BOX DUST GUARD Filed Feb. 26. 1927 Patented Jan. 13, 1931 UNITEDSTATES PATENT OFFICE CHARLES T. BIPLEY, OF CHICAGO, ILLINOIS, ASSIGNORTO 8. .2 '1. METAL COMPANY, OF CHICAGO, ILLINOIS, A. CORPORATION OFILLINOIS JOURNAL-BOX DUST GUARD Application filed February 26, 1927.Serial No. 171,227.

My invention relates to a dust guard for railway journal boxes designedto surround and be supported by the axle to prevent dust, cinders, andthe like, from entering the inner or rear opening in the box. Heretoforethese devices have been made of multiple-ply veneer wood, or of fibrousmaterial, ordinarily, but when made of such materials are unsatisfactorybecause they wear rapidly, are

in juriously affected by moisture and oil, are likely to be broken orinjured in shipment or when put into place in the journal box, and arenot heavy enough so that, as they wear, they will be certain tomove'down and bear on the upper surface of the axle, it being importantthat the gap between the guard and axle, if any gap there be, should beat the bottom rather than at the top since any opening at the under sideof the journal is closed, more or less, against ingress of dust by thepacking in the box.

The object of my invention is to provide a new and improved all metaljournal box dust guard of such composition that the axle will not bescored and wear on the guard will be reduced to a minimum; which will beheavy enough to insure contact of the guardwith the upper surface of theaxle, when wear occurs, and at the same time will be light enough toavoid friction and unnecessary wear; and which will, in addition, bestrong, more durable than the common wood or fibre guards and entirelyunaffected by moisture and oil.

The invention is illustrated in certain preferred embodiments in theaccompanying drawing, in which Fig. 1 is a longitudinal sectional viewof a journal box and axle provided with the dust guard of my invention,

Fig. 2 is a side view of the dust guard, with a part thereof in section,

- Figs. 3 and 4 are cross sections on 33 and 44, respectively,

Fig. 5 is a fragmentary view in perspective of the anti-friction metalring forming part of the guard; and

Fig. 6 is a vertical sectional view of a modified embodiment of theinvention.

Referring first to Figs. 1 to 5 of the drawline ing 10 designates ajournal box of common construction, 11 an axle, and 12 its journal. Thebrass is indicated at 13 and the wedge at 14. The journal box is formedwith the usual groove 15 for the dust guard.

The dust guard consists of a relativel thin plate and a thicker ringadapted to\c osely fit the axle at the shouldered part 16. The ring ismade of any suitable anti-friction metal and the plate may be made ofthe same material, either integrally therewith. or separated therefrom,or of wood or fibre, but in the form of the invention shown in Figs. 1to 5, for reasons of strength, durability and general utility, of sheetsteel. The sheet steel plate designated 17 is preferably formed with aperipheral flange 18 for the purpose of holding the guard in properplace in the groove 15. The ring designated 19 is secured in anysuitable manner in the central orifice of the sheet metal element and ispreferably thicker, in a radial direction, at the top of the ring thanat the bottom so as to provide excess metal at the top for wear whileminimizing cost and weight. In order to hold the ring from rotation inthe sheet metal element the latter is notched as indicated at 20, 20 andthe ring formed with projections 21, 21 to fit into these notches. Thering is formed with a flange 22 against which the inner edge of thesheet metal element bears, the ring being united with the sheet metalelement preferably by upsetting, although the ring may also be die caston the sheet metal element.

' In respect to these details, and other modifications obvious to thoseskilled in the art, I wish it to be understood that I propose to coverby patent all changes within the scope of the appended claim. 90

By making the dust guard of sheet metal and anti-friction metal, asdescribed, the device is heavy enough so that when wear takes place itwill slide down in its groove so as to maintain contact with the upperside of the axle. At the same time the sheet metal body of the guardmakes it light enough so that friction between the axle and the guard isnot excessive. If the guard were made wholly of anti-friction metal ofthickness corresponding to the dust guard groove, it would be too heavy,besides which the cost would be excessive. However, it will be possibleto make the device wholly of a suitable antifriction metal, providedsuch metal is relatively tough, and this form of the invention is shownin Fig. 6 in which the device consists of a thin plate 23 having spacinglugs 24, 24 at its outer edge, in place of the flange of the previouslydescribed form of the invention, orificed at 25 and formed around saidorifice with an integral ring 26 the upper portion of which has a radlaldimenslon greater than the lower portion as shown. A suitableanti-friction metal for the purpose is composed of proportions asfollows:

Per cent Calcium Magnesium 0. 1 Aluminum 0. 02 to 0. 1 Tin 1 to 2 Sodium0. 6 toO. 8

Balance lead.

I claim: 7

A journal box dust-guard comprising a sheet metal eleme'nthavmg a widthsubstantially equal to that of the pocket of the journal box and havingan outer peripheral flange substantially as wide as the thickness of thepocket so that the guard will substantially fit the pocket in thejournal box and be restricted to vertical movement only, the elementhaving an orifice, and a ring of antifriction metal adapted to surroundthe journal, the ring being radially thicker in its upper portion thanin its lower portion, the inner periphery of the sheet metal elementbeing embedded in the rin CHARLE T. RIPLEY.

